RF2 not lauching in VR

[Germain Entete]

Hi, I am looking for suggestions as I posted my issue on Studio 397 support forum, but no answers, so I try my chance here:

I have upgraded to a new PC, and I can't make my Rift work with RF2 anymore:

Error message:
'Unable to init VR runtime . Installation patch could not be located (110)"

- reinstalled several times game & oculus soft.
- made sure I am on Beta (also tried the public build)
- other games work fine.

And in the setting tab, selecting VR still shows 'Monitor#1' and not Rift (if I remember from when it worked).

Any idea what I could try??